With G-Unit partner-in-rhyme Tony Yayo and DJ Whoo Kid in tow, the "In The Club" rapper gives the group of more than 300 kids the afternoon of their lives, performing his hot new single, "New Day."

Before taking the stage, 50 Cent said he was nervous. "It's an opportunity for me to influence the youth," he said.

The kids went wild when the multiplatinum rapper emerged from backstage. One girl said the event made her day. "Today is one of those days when you have bad days at school and you come to the Boys & Girls Club and see a celebrity which you don't see everyday," she said.

50 Cent's Yahoo! Crash Concerts episode is the first in a series of secret shows from your favorite artists.